Dog Apparel Clothes Jacket & Sweatshirt Christmas Reindeer Holiday Festive Pet Sweaters Size Small: Back length 10", Neck girth 10", Chest 12-13" Measure your dog from the base of the neck to the base of the tail for back length. Made with 100% acrylic material for ease care and durability Machine-washable with similar color items in cold water on the gentle cycle Comfortable, warm and a great option for any chilly morning and night